Eyeglass-fastener.



Nok 848,715. PATENTED APR. 2, 1907.

E. H. ZELLER.

EYBGLASS FASTENER.

APPLICATION I'ILIID JULY30, 1906.

FILE; l

useful Improvements in EyeglassFasteners;

wa1dly-dvergingsuifaees, and a fastening and seid lens, as hereinaf'ter deseribed ancl Whieh t apprtains to make ancl use the same'.

EDWARD H. ZLLER, 0F CLEVELAND, 0n10.

EYEGLSS-FASTENEF.

Speeifieaton of Letters Patent.

SEat'tented April. 2, 1907.

Applicn.tiou file(l July 30, 1906. Seriel Nn 328,418.

Be t knoWn that I, EDWARD l-I. ZELLER, e citizen f the United States, residing at Cleveland, in the county of Cuyahoga. and State of0hio, have iriventecl certein newnnd and I do declare the following te l e a lull, clean and exact description of the invention, such as Will enable' others skilled in the art 110 My invention is an irnproved eyeglassfastener f01 mounting the rirnless lenses of en eyeglass; and t consists in alens l1a.ving rebbets in opposite sides thereof to provide outeleme'nt havng a fork astrde of said rabbetecl p0rtions of the lens and with its anns in enagement with saicl outwarclly-cllverging suraces of said rabbets t0 ellect a doveta1l e1- gagement between saicl fa.stening element elaimed.

In the acoompanying drawngs, Figure 1 is an elevation of en eyeglass-lenis and a tastenng element constructed in aceorclsnce with my inventon. Fig. 2 is a similar view et right en les te Fig. 1. Fig. 3 is e. detail-elevation 0% the lens. Fig. 4 is a sectione.l view through the lens and the fastening element, taken on the lane indicated by the line a a of F ig. 1; en Fig. 5 is 9. detail perspeetive view of the fastenng element.

The lens 1 is, in accordance with my invention, provided at one end With substantially quarter-circular rabbet 2, the bottoms of which form outwardly-diver ing surlaces 3.

rabbets e.re hete shown as of eonsiclerable de'pth. In ractice they will be very shellow and will be harc lly perceptible exeept upon a close examination, 'lhe eyeglassfastenng element 4, whicl;g;;ay be a p0rtion of the bridge-piece'or oftlie eyelet t0 which the chain or guard is attaehed, is provided at the end Wth a broade ned head 5 tobea against the edge of the lens, and the seicl head is bifuiu-ated to form a fork, the arme 6 of Whch are presserl in'to engagement with tle i bott0ms of tl1e.rebbets 2, so that a doveteil ondouble-' wedge connection is fonnecl between tl1e lens end tl1e fastening element, as shown.

lt will be understoocl that by means of my impr0ved constrnction of the lens end of the fa.stening element tl1e lens is net weekened by & givet 01 serev: hole therein, as in the usual eonstruetion, nn l it will be als0 1111(l61* stond that the fastening element is securely ettaehed to a lens and can only be casually separatecl therefrom e ither by striking the lens 01 by exe1ting sucli tension en tl1e fas tening element as te cause tl1e eyelet 6 or ts forked head te open. ltwill also be under st0od tl1a.t by rensen of the engagement 0 the broadened ferkerl l1ea lwitl1 the edge of the lens there \Vlll be no pivote.l movement belm*en tl1e lens and the fastening element.

F10n1 the foregoing leseription, taken in conneetien With the aeeompanying drawings, the constructien ancl operetion of the invention Will l e readily nnderstood without requring 9. more extended explanation.

Variens clmnges in the fiii, proporton, and the minor details of construetion may be resortecl te Without lepztrting from the principle 0r samificing :my of the nclvantages of the inventien as definecl by the appended claim.

Having thus lescribed my nventien, what I claim as new, and desire te secure by Let ters Patent, is

A lens rebbeted in opposite sides neer ons edge t0 provitle 0utwnrdlydiverging surfeces, in coml'ination with 0. 'astening ele ment hevng a lorl te engge one edge of the lns sn l lerkarms t0 en age sueli surfaces tl1ereof te effect e. doveteil conneetion between said lens an l smid lastening element, sul stentially as deseribed.

In testimony Wl1ereof I have hereunto set my hand in presence of two sulscribing witnesses.

EDYVARD ll. ZELLER.

W1tnesses:

K. L. Hncoe1c, BELLE IlECOCK. 

